江汉平原落羽杉生长规律研究

Study on Growth Regulation of Taxodium distichum (L.)Rich in Jianghan Plain

摘要:

摘要：通过对江汉平原引种栽培的落羽杉人工林进行试验调查和树干解析，研究探讨了落羽杉树高、胸径和材积的生长规律，结果表明：落羽杉树高前期生长较快，之后逐渐减慢；胸径连年生长量和平均生长量均表现为先升后降，其中10～15 a生长最为迅速；材积生长在9 a前较慢，连年生长量在21 a达到最大,在28 a左右达到数量成熟龄，笔者对江汉平原落羽杉试验林的生长规律进行了研究，以期为落羽杉的引种栽培，造林规划和科学经营提供基础数据和理论数据。

Abstract:

Abstracts:The growth regulation of height ,DBH and volume was studied and discussed by the trial investigation and stem analysis of Taxodium distichum(L.)Rich plantation in introduction and cultivation in Jianghan Plain, the results showed that Taxodium distichum (L.)Rich had a rapidly height growth in the early stage and then the speed slowed down gradually; annual increment and mean increment of DBH had the same growth regulation with a growth rate raised and then fell, it had the highest rapid between tenth to fifth year; The volume grew slowly during the first ninth year and then the annual growth with a rapidly rate, the twenty-first year Taxodium distichum (L.)Rich had the largest current annual volume increment. It can be estimated that the Taxodium distichum (L.)Rich would be mature around the twenty-eighth year. Growth regulation of Taxodium distichum (L.)Rich experimental forest in Jianghan Plain provided basal and theoretical data of introduction and cultivation, afforestation planning, scientific management.